Hinge.



PATENTED JUNE 9, 1908.

2 SHEETS-SHEET 2.

3] nventoz fltkozwuga A. A. SWBNSON.

HINGE. APPLICATION FILED AUG. 15, 1906.

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o nmngmuu um Witnesses ANTON ALRIGK SWENSON, OF MUSKEGON, MICHIGAN.

HINGE Specification of Letters Patent.

Patented June 9, 1908.

Application filed August 15, 1906. Serial No. 330,676.

T 0 all whom it may concern:

Be it known that I, ANToN A. Swanson, a subject of the King of Sweden, residing at Muskegon, in the county of State of Michigan, have invented a new and useful Improvement in a Hinge, of which the following is a specification.

This invention relates to a hinge provided with a pneumatic check for the purpose of controlling the spring and thereby preventing the slamming of the door.

The invention consists of a hinge constructed in two parts each part comprising a casing, one of the casings carrying the spring mechanism, and the other casing carrying a cylinder in which a piston and piston rod, work together with suitable arms and levers connecting the operative mechanism of the two casings.

In the drawings :Figure 1 is a perspective view of the hinge of the door being shown in an open position. Fig. 2 is a sectional view of the hinge, the door being shown closed. Fig. 3 is a sectional view, the

door being shown closed and the section being taken at right angles to that shown in Fig. 2. Fig. 4 is a section on the line 44 of Fig. 3. Fig. 5 shows detail perspective views in outline of a modified form of hinge, with portions of connecting parts. Fig. 6 is a plan view looking down upon the form of hinge shown in Fig. 5, the door being closed. Fig. 7 is an enlarged detail sectional view of a valve plug.

In these drawings A and B represent plates secured respectively to a door and a door frame and upon these plates are casings A and B.

A rotatable shaft C is arranged vertically in the casing B and transverse thereto and within the casing is a coil spring C encircling the shaft C one end of said spring being secured to the shaft and the other end being fastened to the casing. \Vithin the casing A is arranged a cylinder D and within the cylinder works a piston D to which is connected a piston rod D which rod extends through an end of the casing A, the said end forming also an end of the cylinder D.

The lever E is rigidly secured at one end to a projecting end portion of the vertical shaft C and to the casing A, is secured an arm F and a link G is pivotally connected at one end to the lever E and at the o posite end to the outer end of the outwar ly projecting arm F. The arm H is carried by the casing Muskegon and 1 arm H and at its opposite end to B and extends outwardly therefrom and in a horizontal plane, and a curved arm II is pivoted at one end to the outer end of the a slidable plate J which rests upon the casing A and slides in a sleeve or guide-way J carried by the said casing.

The plate J is provided with a depending arm portion J which is connected to the outer end of the piston rod D Preferably I provide a hinge K one leaf of which is secured to anend of the casing-A and the otherleaf of which is secured to the adjacent end of the casing-B.

It will be obvious that when the door is swung open the spring C will be subjected to a torsional strain inasmuch as the shaft C will be partially rotated through the'swinging of the lever E which lever is connected to the door through the link G, arm F, casing A and plate A. Also through the action of the curved arm H the piston D will be moved in the cylinder D thereby compressing the air in the said cylinder and when the door is released the spring will return the parts to their normal positions by means of the lever E, the link G and the arm F, it will close the door while the curved arm H will move the piston in the opposite direction of the movement first mentioned thus compressing the air in the opposite end of the cylinder D, and thereby controlling and regulating the automatic closing of the door.

I have also shown a tapering set screw L, threaded into a suitable perforation formed in an end portion of the cylinder D, and by turning the set screw which forms a plug valve up or down the escape of air from the cylinder and consequent rapidity of the closing of the door can be regulated.

In Figs. 5 and 6 I have shown a slight V modification in which M and M represent the casings and the casing M is provided with a reduced flat portion lNI upon which portion is fitted a right angle plate N provided with sleeves N adapted to register with suitable sleeves O and 0 carried by the casings M and M. The usual pintles are employed for connecting the hinged plate N, the said pintles extending through the sleeves as will be readily understood. In this form a double hinge is provided whereas in the form shown in Figs. 1 and 2 only a single hinge is employed.

Having thus fully described my invention,

cured to a door frame a spring actuated what I claim as new and desire to secure by 3. A door hinge comprising two plates, a

Letters Patent, is

1. A hinge consisting of two casings one of which is to be secured to a door and the other to a door frame, a shaft in one of said casings, a spring coiled about said shaft and connectcd respectively to the shaft and to the casing, a lever secured to the projecting end of the shaft, an arm secured adjacent the other casing, a link loosely connected to said arm and to the said lever, a cylinder arranged within the other casing, a piston therein, a piston rod, an arm secured adjacent the other casing, a slidable plate connected to the piston rod and a curved arm pivoted to the said plate and to the arm last mentioned.

2. A device of the kind described comprising a plate secured to a door, a plate seshaft carried by the other plate, a spring wound by rotation of said shaft in one direction, a lever secured to said shaft, links connecting said lever with the plate carrying the cylinder, a piston. in the cylinder, a piston 35 rod, and means independent of the shaft and spring for connecting the piston rod to the plate carrying the shaft and spring.

A- device of the kind described com prising a casing secured to a door, a casing 40 secured to a door frame, a hinge connecting said casing, a cylinder carried by one of the casings, the piston movable in said cylinder,

a piston rod, means pivotally connecting the said piston rod to the casing carried by the 45 frame, a shaft journaled transversely in the casing upon the door frame, a spring adapted to be wound by rotation of said shaft, a lever fixed upon said shaft, an arm carried by the casing upon the door, a link pivotally con- 50 nected to said arm and to the lever.

ANTON ALRICK Sl/VEN SON lVitnesses:

KARL A. GUSTEFRON, ALEX. BAOKMAN.

shaft carried by one of the plates, a cylinder having a piston arranged therein and carried by the other plate, a piston rod carried by the piston, arms carried by the plates, a lever connected to the shaft, a link pivotally connecting said lever with the arm of the plate carried by the door, and connecting means operative y connecting the other arm and piston rod.

cylinder carried by one plate, a rotatable 30 

